MASON HIEU PHAN
NPI 1639757032
Radiology - Diagnostic Radiology in Loma Linda, CA
NPI Status: Active since March 29, 2021
Contact Information
11234 ANDERSON STREET
WESTERLY C
LOMA LINDA, CA
ZIP 92354
Phone: (909) 558-4000
- Individual
- Male
- Radiology
- Diagnostic Radiology
About MASON PHAN
This page provides the complete NPI Profile along with additional information for Mason Phan, a provider established in Loma Linda, California with a medical specialization in Radiology, focusing in diagnostic radiology . The healthcare provider is registered in the NPI registry with number 1639757032 assigned on March 2021. The practitioner's primary taxonomy code is 2085R0202X with license number A182123 (CA). The provider is registered as an individual and his NPI record was last updated February 2026.
- NPI
- 1639757032
- Provider Name
- MASON HIEU PHAN
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 11234 ANDERSON STREET WESTERLY C LOMA LINDA, CA 92354
- Location Phone
- (909) 558-4000
- Mailing Address
- 11234 ANDERSON STREET GME OFFICE WESTERLY SUITE C LOMA LINDA, CA 92354
- Mailing Phone
- (909) 558-7814
- Is Sole Proprietor?
- No
- Enumeration Date
- 03-29-2021
- Last Update Date
- 02-11-2026
- Code Navigator
Location Map
Secondary Locations
- 4445 Magnolia Ave
Riverside, CA 92501
(951) 788-3274 - 101 The City Dr S
Orange, CA 92868
(714) 456-8888
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Radiology Diagnostic Radiology
- Taxonomy Code
- 2085R0202X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A182123
- License State
- CA
- Taxonomy Description
- A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1639757032, we treat the final digit (2) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 2).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 68 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1639757032, enumerated as an "individual" on March 29, 2021.
The provider is located at 11234 ANDERSON STREET WESTERLY C LOMA LINDA, CA 92354 and the phone number is (909) 558-4000.
Radiology with taxonomy code 2085R0202X and a focus in Diagnostic Radiology.
